CA1280823C - Optical scanning unit - Google Patents

Optical scanning unit

Info

Publication number
CA1280823C
CA1280823C CA000515511A CA515511A CA1280823C CA 1280823 C CA1280823 C CA 1280823C CA 000515511 A CA000515511 A CA 000515511A CA 515511 A CA515511 A CA 515511A CA 1280823 C CA1280823 C CA 1280823C
Authority
CA
Canada
Prior art keywords
coils
scanning unit
magnetic body
optical scanning
objective
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA000515511A
Other languages
English (en)
French (fr)
Inventor
Wilhelmus Adrianus Henricus Gijzen
Leo Honds
Karl-Hanns Meyer
Robert Nestor Joseph Van Sluys
Gerard Eduard Van Rosmalen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE3529089A external-priority patent/DE3529089C1/de
Priority claimed from DE19853529088 external-priority patent/DE3529088A1/de
Priority claimed from NL8503237A external-priority patent/NL8503237A/nl
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1280823C publication Critical patent/CA1280823C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0935—Details of the moving parts
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
CA000515511A 1985-08-14 1986-08-07 Optical scanning unit Expired - Lifetime CA1280823C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3529089A DE3529089C1 (de) 1985-08-14 1985-08-14 Lichtoptische Vorrichtung zur Lenkung bzw. Ausrichtung eines Strahlenbündels
DE19853529088 DE3529088A1 (de) 1985-08-14 1985-08-14 Lichtoptische vorrichtung zur lenkung bzw. ausrichtung eines strahlenbuendels
DEP3529088.9 1985-08-14
DEP3529089.7 1985-08-14
NL8503237 1985-11-25
NL8503237A NL8503237A (nl) 1985-11-25 1985-11-25 Optische aftasteenheid.

Publications (1)

Publication Number Publication Date
CA1280823C true CA1280823C (en) 1991-02-26

Family

ID=27193400

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000515511A Expired - Lifetime CA1280823C (en) 1985-08-14 1986-08-07 Optical scanning unit

Country Status (7)

Country Link
US (1) US4783775A (de)
EP (1) EP0215498B1 (de)
JP (1) JP2615014B2 (de)
KR (2) KR870002559A (de)
CA (1) CA1280823C (de)
CS (1) CS266336B2 (de)
DE (1) DE3683227D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8600168A (nl) * 1986-01-27 1987-08-17 Philips Nv Optische aftasteenheid.
KR100471058B1 (ko) 2001-10-23 2005-03-08 삼성전자주식회사 디스플레이장치
US11462960B2 (en) * 2019-12-02 2022-10-04 Hiwin Mikrosystem Corp. Rotor with first and second permanent magnets having support members and slots

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443734A1 (fr) * 1978-12-08 1980-07-04 Thomson Csf Dispositif d'acces a une piste portee par un support enregistrable ou lisible optiquement et systeme optique comportant un tel dispositif
US4574369A (en) * 1982-01-28 1986-03-04 Ricoh Co., Ltd. Tracking/focusing device for positioning an optical lens unit
NL8202451A (nl) * 1982-06-17 1984-01-16 Philips Nv Optische inrichting.
DE3234288C2 (de) * 1982-09-16 1984-07-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Optische Vorrichtung zur Lenkung bzw. Ausrichtung eines Strahlenbündels
US4658390A (en) * 1983-04-18 1987-04-14 Sharp Kabushiki Kaisha Optical focus position control in an optical memory system
US4643522A (en) * 1983-08-03 1987-02-17 Sony Corporation Optical pickup having a driving unit for moving objective lens
JPS6061927A (ja) * 1983-09-16 1985-04-09 Hitachi Ltd 三次元対物レンズ駆動装置
NL8303700A (nl) * 1983-10-27 1985-05-17 Philips Nv Electro-optische inrichting.
NL8403052A (nl) * 1984-10-08 1986-05-01 Philips Nv Optische inrichting.

Also Published As

Publication number Publication date
KR870002559A (ko) 1987-03-31
EP0215498A1 (de) 1987-03-25
KR870002560A (ko) 1987-03-31
US4783775A (en) 1988-11-08
KR940008402B1 (ko) 1994-09-14
EP0215498B1 (de) 1992-01-02
CS591586A2 (en) 1989-03-14
CS266336B2 (en) 1989-12-13
DE3683227D1 (de) 1992-02-13
JP2615014B2 (ja) 1997-05-28
JPS6238539A (ja) 1987-02-19

Similar Documents

Publication Publication Date Title
JP3684016B2 (ja) ２次元光偏向装置
EP1271493B1 (de) Treiberverfahren für Stellantrieb eines optischen Abtastgeräts
US8254045B1 (en) High-speed Z-axis focusing device and associated methods
CA1280823C (en) Optical scanning unit
US4747668A (en) Optical scanning unit
US4734899A (en) Optical scanning unit for projecting a beam onto an optical record carrier with positional control using sets of three coils with each set connected using two amplifiers
US6310840B1 (en) Optical scanning device comprising a main lens and an auxiliary lens
WO2000046800A3 (en) Optical scanning device with parallel-controlled actuators
US5226030A (en) Magneto-optical recording and reproducing device
US5289442A (en) Optical scanner with a long fast access stroke
CN1007465B (zh) 光扫描器
CN1007295B (zh) 光学扫描装置
JPH0435815B2 (de)
EP0574996B1 (de) Einrichtung zum optischen Abtasten einer Oberfläche
NL8503237A (nl) Optische aftasteenheid.
KR100219676B1 (ko) 광픽업용 액츄에이터
JPS58137140A (ja) 光学式情報記録再生装置における光学系駆動装置
JP3378190B2 (ja) 光学ピックアップのアクチュエータ
JPH01107330A (ja) 分離型光学ヘッド
JPS6254843A (ja) 対物レンズの多次元駆動装置
JPH01192024A (ja) 対物レンズ駆動装置
NL8503238A (nl) Optische aftasteenheid.
JPH02183418A (ja) 光学ヘッド
JPS59178633A (ja) 対物レンズ駆動装置
JPS59160836A (ja) 投影レンズ駆動装置

Legal Events

Date Code Title Description
MKLA Lapsed